diff mbox series

[v2,28/48] tcg/optimize: Split out fold_dup, fold_dup2

Message ID 20211007195456.1168070-29-richard.henderson@linaro.org
State New
Headers show
Series tcg: optimize redundant sign extensions | expand

Commit Message

Richard Henderson Oct. 7, 2021, 7:54 p.m. UTC 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/optimize.c | 53 +++++++++++++++++++++++++++++---------------------
 1 file changed, 31 insertions(+), 22 deletions(-)
diff mbox series

Patch

diff --git a/tcg/optimize.c b/tcg/optimize.c
index 7a7c3e25c5..db50cf6499 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -917,6 +917,31 @@  static bool fold_deposit(OptContext *ctx, TCGOp *op)
     return false;
 }
 
+static bool fold_dup(OptContext *ctx, TCGOp *op)
+{
+    if (arg_is_const(op->args[1])) {
+        uint64_t t = arg_info(op->args[1])->val;
+        t = dup_const(TCGOP_VECE(op), t);
+        return tcg_opt_gen_movi(ctx, op, op->args[0], t);
+    }
+    return false;
+}
+
+static bool fold_dup2(OptContext *ctx, TCGOp *op)
+{
+    if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) {
+        uint64_t t = deposit64(arg_info(op->args[1])->val, 32, 32,
+                               arg_info(op->args[2])->val);
+        return tcg_opt_gen_movi(ctx, op, op->args[0], t);
+    }
+
+    if (args_are_copies(op->args[1], op->args[2])) {
+        op->opc = INDEX_op_dup_vec;
+        TCGOP_VECE(op) = MO_32;
+    }
+    return false;
+}
+
 static bool fold_eqv(OptContext *ctx, TCGOp *op)
 {
     return fold_const2(ctx, op);
@@ -1718,28 +1743,6 @@  void tcg_optimize(TCGContext *s)
             done = tcg_opt_gen_mov(&ctx, op, op->args[0], op->args[1]);
             break;
 
-        case INDEX_op_dup_vec:
-            if (arg_is_const(op->args[1])) {
-                tmp = arg_info(op->args[1])->val;
-                tmp = dup_const(TCGOP_VECE(op), tmp);
-                tcg_opt_gen_movi(&ctx, op, op->args[0], tmp);
-                continue;
-            }
-            break;
-
-        case INDEX_op_dup2_vec:
-            assert(TCG_TARGET_REG_BITS == 32);
-            if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) {
-                tcg_opt_gen_movi(&ctx, op, op->args[0],
-                                 deposit64(arg_info(op->args[1])->val, 32, 32,
-                                           arg_info(op->args[2])->val));
-                continue;
-            } else if (args_are_copies(op->args[1], op->args[2])) {
-                op->opc = INDEX_op_dup_vec;
-                TCGOP_VECE(op) = MO_32;
-            }
-            break;
-
         default:
             break;
 
@@ -1783,6 +1786,12 @@  void tcg_optimize(TCGContext *s)
         CASE_OP_32_64(divu):
             done = fold_const2(&ctx, op);
             break;
+        case INDEX_op_dup_vec:
+            done = fold_dup(&ctx, op);
+            break;
+        case INDEX_op_dup2_vec:
+            done = fold_dup2(&ctx, op);
+            break;
         CASE_OP_32_64(eqv):
             done = fold_eqv(&ctx, op);
             break;